<!DOCTYPE html>
<html>
<head>
<title>Bar Charts</title>
<meta name="description" content="GoJS nodes containing simple bar charts." />
<!-- Copyright 1998-2016 by Northwoods Software Corporation. -->
<meta charset="UTF-8">
<script src="go.js"></script>
<link href="../assets/css/goSamples.css" rel="stylesheet" type="text/css" />  <!-- you don't need to use this -->
<script src="goSamples.js"></script>  <!-- this is only for the GoJS Samples framework -->
<script id="code">
  function init() {
    if (window.goSamples) goSamples();  // init for these samples -- you don't need to call this
    var $ = go.GraphObject.make;  // for conciseness in defining templates

    myDiagram =
      $(go.Diagram, "myDiagramDiv",  // must name or refer to the DIV HTML element
        { initialContentAlignment: go.Spot.Center });

    // the template for each item in a node's array of item data
    var itemTempl =
      $(go.Panel, "TableColumn",
        $(go.Shape,
          { row: 0, alignment: go.Spot.Bottom },
          { fill: "slateblue", stroke: null, width: 40 },
          new go.Binding("height", "val"),
          new go.Binding("fill", "color")),
        $(go.TextBlock,
          { row: 1 },
          new go.Binding("text")),
        {
          toolTip:
            $(go.Adornment, "Auto",
              $(go.Shape, { fill: "#EFEFCC" }),
              $(go.TextBlock, { margin: 4 },
                new go.Binding("text", "val"))
            )
        }
      );

    myDiagram.nodeTemplate =
      $(go.Node, "Auto",
        $(go.Shape,
          { fill: "white" }),
        $(go.Panel, "Vertical",
          $(go.Panel, "Table",
            { margin: 6, itemTemplate: itemTempl },
            new go.Binding("itemArray", "items")),
          $(go.TextBlock,
            { font: "bold 12pt sans-serif" },
            new go.Binding("text"))
        )
      );

    var nodeDataArray = [
      {
        key: 1,
        text: "Before",
        items: [ { text: "first", val: 50 },
                 { text: "second", val: 70 },
                 { text: "third", val: 60 },
                 { text: "fourth", val: 80 } ]
      },
      {
        key: 2,
        text: "After",
        items: [ { text: "first", val: 50 },
                 { text: "second", val: 70 },
                 { text: "third", val: 75, color: "red" },
                 { text: "fourth", val: 80 } ]
      }
    ];
    var linkDataArray = [
      { from: 1, to: 2 }
    ];
    myDiagram.model = new go.GraphLinksModel(nodeDataArray, linkDataArray);
  }
</script>
</head>
<body onload="init()">
<div id="sample">
  <div id="myDiagramDiv" style="background-color: white; border: solid 1px black; width: 100%; height: 500px"></div>
  <p>
    Each node contains a Table Panel whose <a>Panel.itemArray</a> is data bound to the "items" property which holds an Array of data objects.
    That Table Panel has an <a>Panel.itemTemplate</a> which creates a bar (a rectangular Shape) and a TextBlock label for each item.
    Each bar also has a tooltip showing the value.
  </p>
</div>
</body>
</html>
